3 ms·
Could the OS intentionally clear or write dummy data to the register instead?
by Wowfunhappy 5y ago
Could the OS intentionally clear or write dummy data to the register instead?
- josephcsible 5y agoNo. The author explained why not: > originally I thought the register was per-core. If it were, then you could just wipe it on context switches. But since it's per-cluster, sadly, we're kind of screwed, since you can do cross-core communication without going into the kernel.